Using the parts inside a single molecule, scientists have constructed the world's smallest car. It has a chassis, axles and a pivoting suspension. The wheels are buckyballs, spheres of pure carbon containing 60 atoms apiece.
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This is the next big thing in the health care industry and also the vehicle to build infrastructure in inhospitable climates. Just an aside, nanomachines can also be used as a weapon as I illustrated in Technocracy. Nanotechnology is the next frontier. I feel like I did when I was young, watching the Apollo missions to the Moon. Oh the possibilities . . .